Fluid-mixture regulator.



G. MACHLET, JE. FLUID MIXTURE REGULATOR,

APPLIGATION FILED MAY 1.2, 1908."

Patented Nov. 18, E913.

3 SHEETS-SHET 1.

www w G. MAGHLET, JB. 'FLUID MIXTURB REGULATOR. APPLIGATION FILEDMAY 12, 190s. A

'3.978,70. I Patented Nov.18,1913.

3 SHBETS-SHEBT Z.

G. MAGHLET, JR. FLUID MIXTURE REGULATOR. APPLICATION FILED MAY 12, 1908.

edN0v.18,1913.

3 SHEET S-SHEET 3.

Patent j@ y @sw www@ entren ermittelte nemen.

G'ERGE MACHLET, JR., F ELIZABETH, NEW JERSEY.

FLUID-M XTURE REGULATGR.

Specification of Letters Patent.

rammelt nw. pie, i els.

{l1-leien apbnwmn mea August 1, 190e, sena] ng, sewer. mviaed anu ons appncnon mea nel; 12';

To tl/'Z 207mm z'zf may concern i Be 1t known that I, GeoRonlgJCHLETf .a citizen of the United States, residing 1n EliZhet-h, 1n the county of Union zuidi vice controlled by the heut of the furnace itself. The Claims in said application 328,- 697 relate generally to n thermo-electric ertor in the furnace which operates u deifioe' to control the supply of mixed air and gasto the furnnoe. lVhen the heat reaches a predetermined point, the supply ot jtuel is either redueedor eut oit, find if the heat diminishes e trille,the supply is renewed or increased so that the heut ot the furnace is maintained with .'nnlistm'itinl uniformity at the precise point desired, whieh is n mntter of great in'iportnnee in n'uiny arts. Moreover, it frequently happens that it is desired lo use `the saine l'urnuee for heating the same or different, metals or nmterials to different degrees, and accordingly l provide means for predetern'iining the degreeo heet et which the fuel supply shall he'reduced or regulated.

rlhe heet governing nppnrntus includes ineens for ref gulnting lioth the minimum :1nd maximum Supply ot' fuel to the -jlurnoee nooorlling to the judgment of the attendant-.-

For some furnaces und Solne kinds of work there should be little variation between maxiinnn and minimum supply, whereas in other euses the supply should at thnes he very great :1nd again sluit (completely olf. All such variations nre readily seeurefl hy my invention.. lt is oleo importent, especially Where fuel ,das and nir are mixed he fore enterin'r the hin-nere i the furnnre, to secure the right q )roportio ot' the gus to the air, and :eeordingly' one feature ot' my inientionr'esitles in' securing any desired proportion and cunning sneh' yproportion to he maintained in uniformity during;- all line toet-ions in the ifoluln'e of the mixture snpn pliedto' the tornate.

Serial No. 432,341.

In the preferred forni of the invention, there' einployed an apparatus for regulating or controlling the proportions of gas und air to he siipplied to the furnace, and this apparatus includes e single yalve heving- :in nir `port and o gets port, so thzit. when the vulve is operated'looth the ports are opened or closed in unison. The opening movement; of the valve is limited by an adjustable stop, whereby the xnnxinuni supply oiE tir and fuel to the furnace is determined; ztnd anotheredjiistahle stop' is provided for limiting the closing movement of said valve that the latter-.muy either partly close or close altogether, when the desired degree of heat of the furnace is attained, according to the chui-noter of the furniiee und Werk in hand. A closure is provided foi' the gas port in said vulve, whieh is o 'rable independently ol' the air port, and t 1e movement of suidelosure 'is directly transverse to the movement of the valve, wlxerebj1v the propel'- tion of ,egos may be decreased or increased indenzndently of the opening and closing movements oi the valve, thus securing during all 4lluetuetions inthe volume of mixture supplied to' the furnace any desired proportions ofgus and dir.

l @ther features sind advantages will hereinafter appear.

,ln the accompanying drawings, Figure. 1 is a diogrnnllimtie elevation of :1 gus t'urnuee find an allpnrntui for controlling' the heut thereof. Fig. i). is n pluri, und Fig. 3 n side elevation partly in section ot :L .'oltn'ieter forming' porti-ot u pyrotneter, und also lluvini; ineens lo control the supply ol fuel to the turiuufe. Fig. ilshows n vertieul rentrnl ser-tion of' un uplmrnlus for controllingY the proi'iortions ot'i gus undV nir. Figs. 5 :nid t3 ure crous-seelione teken through the fus eoinmrtn'zteilt. nt the lower putt of the valve seen ot lig. 11, Fin'. 5 showing the gils ports open, :unl Fig. t5 sllowinf; theul closed by ineens ot u manually :ul'justulile rlosure. liig. 7 is u section th rough the mixture renululinfg apparatus taken :it right :Ingles lo the Fig-.elsertion. Fig. Ssho'ivs nu nir shell ort uhr fixed in the upper port of the mixturey reginlntor or proportion adjuster. Fig. l! shows n tulle W ich is mounted in the lou'er port of the mixture regulator for rotation to serve :is :i elos'hre for the gas ports und the muiu vette. lfig. 'l0 shows the main vulve in the regulator. Fig. 11 is n sectional view of un air operated diaphragm for opening ther y the flow of air from the operation of said diaphragm. Fig. 14 is a plan of the apparatus seen at Fig. 4.

The fuel-gas enters through a pipe 1 and the air to be mixed therewith enters through a pipe 2, the air being usually supplied under pressure of a pound to several pounds to the inch. Air and gas pass separately through a proportion-adjusting apparatus 3, the gas flowing therefrom through a pipe 4, and the air through' a pipe 5. The pipe 4 joins pipe at the point 6, and thc mixture tiows through pipes 7, 8, and 9 to burners 10 which enter a furnace 11.

The apparatus 3 is in the form of a verw tical pipe cast with suitable nipples to receive the pipes 1, 2, 4, 5, and divided by partitions 12, 13, 14 into four chambers, namely, air inlet chamber 15, air outlet chamber 16, gas inlet chamber 17 and gas outlet chamber 18. A main valve in the form of a vertical tube 19, Fig. 10, extends through said apparatus 3, said valve passing through all of said partitions and. being itself divided by apartition 20 into an upper compartment 21 for air, and a lower compartment. 22 for gas. rlhe compartment 21 in the valve affords a passage fo' air between the inlet and outlet chambers 15 and 1G. The compartment 22 forms a similar passage for gas between the. inlet and outlet chambers 17 and 1S. Fixed in the upper part of the regulator or proportion adjuster is a tube or shell 215, Fig. S, extending through the chambers` 15 and 1G, and having opposite openings 24 in the former and opposite openings 25 in the latter. The openings 24 register with opposite openings 26 in the valve, and the openings are also juxtaposed to oppositel'iorts 27 iii the valve. lt will be understood that the openings are made oppositely in the valve partly for balancing the saine and part-ly to secure ample passages for the fluids. The valve is seen closed at Fig. 4, the portions of the, shell 2?,

indicated in dotted lines at. 28. Fig. S, servin Y, as closures for the ports 27. vWhen the va ve fully raised, said ports register with the openings in the shell 23. thereby establishing free communication between inlet and outlet pipes 2 and 5. The passages 24 and 26 are always open, the latter being of the greater height so as to compensate for the vertical movement of the valve. In the lower end of the device is inserted another shell or tube 29 opening at its upper end into the gas inletchamber 17, and extending through the outlet chamber 18 in which it has opposite openings 30. The valve 19 extends also through tube 29, and tits closely in both tubes and 23 while free to move up and down independently thereof. Near the lower end the. val-ve is provided with opposite ports 31, which when the valve is lifted register with the passages 30 in the tube 29. The portion of the latter indicated by dotted lines Fig. 9, just below the. openings l() serves as a closure for the ports 31 when the valve is dropped, Fig. 4. The valve has opposite openings 33 in the gas inlet chamber 17 corresponding with the openings 26, said openings 33 being never closed. In the bottom of the valve is fitted a plug 34, and a central pipe 35 opens at one end through the plug and at theother end through the partition 2O to admit coinpressed air beneath the plug 34 to facilitate lifting the valve. The valve is lifted by means of a rod 36, which is caught at its lower end upon a long transverse pin 37 thrust through a head 23S provided in the valve and also extending through the oppo-y site slots 39 formed in an extension of the tube 23, which projects above chest .11n opening 3G in the top 36 of head 88, prevents a vacuum forming above the head. Upon said extension are threaded nuts 41 and 42, one above and one below thepin 37 and engageable thereby, so thatthe nuts serve as adjustable' stops to limit the opening and closing movements of the'valve. In the Fig. 4 construction, the rod 36 constitutes the core of a solenoid 43, whereby the valve 19 is lifted; but in the preferred foi-1n of the invent-ion, Fig. 11, said rod is attached at its upper end to a flexible diaphragm 44 provided in a frame or casing 45. lhe upper end of the extension is screwed into said casing at 4G. y

Compressed air is admitted from thepipe 2 to the casing 45, that is to the lower' charnber 47 of the two'into which said casing is divided by said diaphragm 44; the upper chamber having a vent 4S. A small solenoid 49 controls the tlow of compressed air from the supply pipe 2 to the chamber 47. as well as the venting of air from said chamber. rl`he core 50 of the solenoid 49 is formed at its lower nd with a head which constitutes a valve 51 fitting in a stationary tube 52 and resting upon a sait- !33, thereby closing said tube when'the core is down. For convenience in manufacture,'said tube 52 is inserted in a block o`r length of thick pipe 54 yupon the top ofi which the solenoid 49 is secured, and a. pipe leads from said tube to the diaphragm chamber 47. When the valve Loregreo is lifted, the air passes up from the supply pipe 2 into the lower end of the tube 52 und through holes 56 in the side of the lutter above the seat 53; but when the vulve drops, the tube is; completely closed below Seid hole 56, While7 owing to the thinness of the valve 51, the hole 56 ie left openA et the top, Fig. 13, to permit air 'to rent from the chainlocr 47 through Vents 57 iiiorined in said tube5 the core being cut away et 58 to 't'orin e. paesage in the tube between the hole 56 and rent or vent-S 57. Then the rali/e is raised, the heed 5l is lift-ed up above the helenced holesI 5G, and no air esc-epee through said vente. The tube 52 may continue up to'forni the central part ot the 'freiner/ori; of the solen noid illustrated, und to serve e guide for the upper end of the core.

it will he seen that When the Solenoid is energized, the core is raised, thus closing' the tuhe elio-ve the port 56 und leaving au open puefzegi through seid port from the compressed :iir supply 2 to the diaphragm chuiuher il?. VThe diaphragm ie raised by the air pressure, thus lifting the. vulve i@ end opening; the ports 27 und 3l, So thut air und gas flow simultaneously `through the cheet'.

The extent to which the vulve opens depends upon the :idjustinent ofV the stop el. TWhen the magnet is denergized, `'the solenoid drops und the faire 5l closes the tube below the port- 56 und permits the air to escupe from the clnimber #il through the vente 57, Whereupon the Valve 19 drops until. arrested by the udiustuhle nut 4Q. The solenoid fifi included in a circuit designated geni-rally :is 59 und including u buttery or other source oi power GO7 und also including` :i switch (il nornuilly held closed by u spring S2. iuid circuitvr :also includes u fixed uietzii hruclci G3 having' e lip (friugeinst which Suid switch cloecs4 it will he seen that the electricitir muy flow from the buttery G0 through the rWire 59, then through the solenoid yiii, u

wire 593. the switch ile the bracket 33, und u wire 59", buck to ihe buttery, und that while tlie,ciiciiit is closed, the ulve 5i is lii'ted und the regulating' vulve .i9 is opened, eo that air und fuel hre supplied to the furnace.

'Ylhcinleuns 'for controlling' 'loe iuel Supply oleo include@y e heruiorlectric gemeinte; 65, which is usually termed mi element, `find is oil" Well known 'torni7 und is ineeried directly in the heut chzunhcr of the furnace This;

l{ rneretor is included in eh electrical circuit G6, Fig. l, which also includes; :i Voltineter or device GT ior indicatingn the dow oi' electricity in Suid circuit 6G; seid voltinetor in chidiug u movable puit 68, to which fixed un index urni @Sito cooperate with a seule llilhcn the element is heated, the electricitgyr flows through the circuit 66, und the part 68 turns7 thus moving the index (S9 along the Seule 70 to au extent to determine the degree of heat in the furnace. rlie scale may showy 'either the heut of the furnace or the power oi" the electric current or both. l utilize the movement of seid part 68 to control Vthe vulve operating' circuit 59. For this purpose another circuit 'il is provided including e Wire 752, `which is mounted on said index arm G9, und leads to a contact T3 provided 'upon the tip of said erin. n the path of said contact is provided` :i coperuiing Contact 74, upon the end of u metal arm 75, which is pivoted ut T6 coucentrically with the pin 77, upon und with 'which' turns the member or hee-GS o'l the i'ollnieier, the piu being delichiel?.v poised upon u seat 77a. The Contact ifi muy hence he set et any point on the scale TO und rigidi)Y secured by :i nut T8. .When the erin (3S) swings to the right suiiiciently to cnc-otre .the contacts 73 und 74.3 the circuit 7l ie Lloecd, und the switch (Si is opened hy lucene ot u muguet 79 Which is included in Suid circuit 7i it will bc eeen that beginning' et contact 7?, the current Hows along; the wire T2, which :it its inner end ie hooked into un eye 8l) formed upon o metal pleite Sl secured upon the freeing 82 of the TJoltincler or gulvunoinetcr, Suid brochet being connected lo u post to which is secured the wire 7i. 'l`he lutter leads through the inag- -net 79, und thence through the Wiree| 71'a :uid olif* lo the huttery 60, the .circuit includ` incr u wire 79") connected to the conductor erin 75, 'lhc opening of the switch 61 breaks the solenoid circuit 59, thereby reducing orl stopping` the l'low of fuel lo the furnace according to the adjustment of the stop 4Q. The wire T2 is very line und light. und ui- 'fords no upineciuble resistance to the moveAv ment oli' the index firm 69, which is delicatcli,Y poised, und which muet indicate accurately the iiow of electricity in the circuit G6. In order to uvoid injuryY to the fine Wire 72, the coil T93 of the muguet 79 may he inside of ri'ietunce wire so that the whole energy of the buttery (il) shell not flow through seid wire Y.

lu operation it heini;` useumed that the current is; (lowing through the circuit 59, taires Si und 85 -iu the gus und nir eupply pipes .l und :1re opened. Coinpreseed air Howe: troni pipev 2' through the tubos 52 and to the chuuihcr il?, und liils the die,

phiii'in iii, thereby ruieing the Valve 19 so tino; fue und nir muy `flow therethrough und thence through the pipes u und 7 to the turner-c hurner System 8, 9, 10, the gos being; ignited within the furnace. The heating of the eieineut or theriuoelectric generator ce; ce the current to trziveree the circuit 6G und the nienihcr 68 tetu-rn. ihe errrri'i is swung' uround to the point on the Seule 70 which iudicnteel the deg-ree ot heut which it ideeired to .secure und maintain in the furnace. he the furnace grows hotter, the erm Gil gradually approaches the erm until the Contact '73. engages the content 74, 130

vply 2 and diaphragmchamber 47, and pei'- mitting'the air to vent from the latter, so

, that the diaphragm drops together with the valve 19, thereby partly or Wholly closing the air and gas ports in the chest 3. The llames in the furnace being hence reduced or extinguished, thefurnace begins to cool, thus reducing the current flowing in the voltmeter, whereupon the armature 68 begins to turn back and the contacts 7 3 and 74 are separated and the circuit 71 broken. The spring 62 closes the switch 61, thereby permitting the current to flow through the circuit 59 and the solenoid 49, so that the vllve 19 is opened and air and gas again flow into the furnace, which is now suficiently hot to ignite the gas. It will be understood however, that the stop 42 may be adjusted if desired so to permit a little gas to flow into the fuiiiace, so that the liames'may not entirely die out when valve 19 drops.. After the contacts 73 and 74 engage, a very slight reduction in the heat of the furnace is sutlicient to separate them, and thereby renew the supply of fuel, so that the liuetua'tions in the tempera ture of the furnace when in operation are very slight. The attendant adjusts the stops -tl and 42 to limit the opening and closing movements of the valve according to the heatrrequired and the work in hand, and also turns a hand wheel 86 to rotate the shell or sleeve 29 to open or close the gas ports 3l in the valve 19, thereby securing the desired proportions ofgas and air in the mixture, which are required for different kinds of work. It will be seen that the adjustment of the sleeve 29 is at right angles or transverse to the opening or closing movements of the valve, whereby the passage at 31 may be enlarged or diminished transversely to alter the flow of gas, while remaining of the same height as the air port 27, so as to be co-extensively opened or closed by the movements of the valve 19. ln this way, any desired proportions of fas and air are constantly maintained throughout all fluctuations in the volume of the mixture delivered to the furnace. The hand wheel SG may be provided with an index 87 to cooperate with a scale SS to inform the attendant to what extent the passage 31 is opened or closed by the sleeve 29. The plug' 89 is secured to the bottom end of the sleeve 29, and the wheel 8G is secured upon the stem of the plug by means of a pin 91, which carries the index S7. The scale SS may be formed upon a screw cap 92threaded upon the bottom of the chest 3, and provided with a locking screw 90.' The judgment and experience of the attendant ywill dictate the extent to which to turnthe hand wheel 86 for different classes of work, and will also enable him to set the stops 41 and 42 properly; whereupon the furnace will maintain the heat at the desiredrpoint for an indefinite length of time Without further attention.

Variations may be resorted to within the scope of the invention. Portions of my improvements may be used without others.

Having thus described my invention, I claim: v

1. 1n combination, a chest provided with an inlet and an outlet for air and also pro vided with an inlet and an outlet for gas, a hollow valve extending through said chest and having ports between the air inlet and outlet and also having ports betweenthe gas inlet and outlet, means for moving said valve, and means confined in said chest and having a shell form and itting said valve and provided with ports and coperating with said valve to control the low of air and gas through said chest.

v 2. In combination, a chest having an air inlet chamber and a separate air outlet chamber, and a tube in coinmunicationwith the inlet chamber and having ports in the outlet chamber, said chest also having a gas inlet chamber and a separate gas outlet chamber, and a tube in communication with the gas inlet chamber, and having ports in the gas outlet chamber, a tubular valve extending` through said tubes and fitted thereto, and divided into air and gas compartments,

one compartment having an opening in said air inlet chamber, and the 'other compartyment having an opening in said gas inletl chamber, and` said compartments having ports to cooperate with the ports in said tubes to control the How of gas and air through the chest, and means for operating said valve.

3. A fluid mixer comprising, in combination` a chest; .a Ytubular valve extending through said chest; means dividing said` valve into unconimunicating compartments for different gases or liuids; means for operating said valve; said chest having means for separately admitting the dierent fluids; said valve having ports or openings and said chest also having ports or openings to cooperate with those in said valve, for'gegulating the volume of fluids flowing through said valve; said ports and openings proportioned to permit the flow of a larger volume of one fluid than of the other, and constructed so that at the different positions to which the valve may be opened or closed, the areas of the openings formed by the adjust-nient of the valve will maintain substantially the same proportion one to the other; whereby a uniformity of proportions of the different liuids is secured in the mixture during tiuctuationsof the volume thereof delivered.

a gas compartment and provided with a port imeee opening into one of lthe air eonipartinents and having a port in the other air compart- `1nent, a, tube opening into one of the gas compartments and having a port in the other gas compartment, a tubular valve erttending through said tubes and fitted there to and divided into an air compartment and in juxtapoeition to said'air port., and a provided 'with a portin juxtaposition to s;

gas port, said tube also having in its air compartment an opening7 for the passage ot air, and in its L@gas compartment an opening for the oassaffe ol was. and for ooi C: a i.

erating said valve to open and Close. itsl ports simultaneously,

5. A tluid mixer Comprising, in Combination, a chest, a tubular valve extending' through said Chest; means dividing' Said valve into uneornmunieating compartments for different ,eases or fluids; means for operating said valve; Said chest having means for separately admitting' the different. lluids;

said valve having ports or openings and said Chest also having parte or openings to eooperate with those .in said valve.,y for regnlating the volume of fluids flowing;` through said valve; said ports and openings'proportioned to permit the flow of a larger volume ot' one (luid than oi' the other, and constructed so that. at the different posiw tions to which the valve may he opened or closed, the areas of the openings 'formed hy the adjustment of the valve will maintain substantially the same infiniortioa one to the other; whereby a uniformity of iliroportions of the different fluids in scoured in the mixture during ilr'mtuatione of the volume the of delivered, and adjustable rueane Mperating with said valve for regulating; the proportions of the fiuids composing" the mixture.

6. An apparatus for adjusting the 'proportions oit hiel-gas and air, 'como i combination, a chest provided with iii .an-:l gas admit-ting and delivering means, av hollow valve extendingV through eaid chest and' air,

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tending through said chest anddivided into air and gas eompartmenm, ports being proiided in said compartments, and means heing" provided 'for causing air and gas admitted to said eliest to 'pass separately i' through their respective compartments in said valve, a tithe or shell d'tting said valve and having a port jaa -apfaied to one of the ports in said valve, means for effecting telative adjustmentv between said valve and said shell to open or close the last mentioned valve port independently oit the other valve port, so ae to regulate the proportion oi? gas and air in the initture delivered, and means cooperating with said valve to open or close ita 'porta einiuitaneously, independently oi. said adjustment of the proportion-regulating 8. ln combination, a Chest. having airinlet and air-outlet chambers, and also having gas-inlet and gas-outlet chambers, all of said chambers being separat-e, tubular valve extending through said Chambers and di y'ideal into air and gas compartments, the air compartment having a porty forming part of a cominunioation between -eaid air-inletJ and said air-outlet chambers, and' the gas eoinpartmentv also having a port forming nari o' a communication between the gas inletmid gasaiuiiet chambers, a. Closure for said ,iras port, a Closure for Said airport, means i'or moving said valve to close both its ports simultaneously, and means for adjusting the gasmort closure in a direction transverse to the movement of the valve, so as to open or Close the gas port and regulate the proportion of gas to air in the delivered mixture.

9. An apparatus for adjusting?- the proportions oi. 'fuel-gas and air, comprising, in combination, a valve-having therein an air port and a ,gae port, said valve divided into eoinpartinenta hy a partition between said ports, ineane tor moving the valve to Close or open both ports together, and means ad- ',iustahle in a. direction transverse to the movement the valve` for closingm or onen- .ingj one of said ports indepent'ientljf of the other thereof, so as to regulate the proportion ot` and air delivered by the paratus.

i0. ein apparatus for adjusting the prouortione uei'as and air, com orisin' in combination, a ehest divided transversely into an air inlet Chamber, an air outlet chamher, gas inletI and outlet chambers, a tubular valve extending through said chambers and divided into air and gas compartments, Said valve having air and gas ports, closures in said air gas Chambers for said ports, means for moving; said valve endwise to close or open said porte together, and means for rotative adjustment of the elosure in the gas chamber, to varythe proportion oi? gas and air.

roo

chambers, a tube tixed in said chest and hav- 11. An apparatus :tor adjusting the proportions of fuel-gas and air, comprising, in combination, a chest having air inlet, air outlet, gas inlet and gas outlet chambers, said chambers being separate each from the others, a tube extending from the air inlet to the air outlet chamber and opening into both, a rotatable tube extending from the gas inlet to the gas outlet chamber and opening into both, a tubular valve extending through said tubes and fitted thereto and divided into air and gas compartments having a port in each compartment, and said tubes forming closures for said ports, means for moving the valve endWise to close the ports together, and means for turning the tube in the gas chamber, to close or open the port in the gas compartment of said valve, independently of the port in said air compartment so as to vary the proportion of gas and air mixed,

l2. An apparatus for adjusting the proportions ot fuel-gas and air, comprising a chest to receive and deliver the gas and air, a movable valve dividedinto uncommunicative gas and air compartments, having means to increase or diminish simultaneously the 'tioiv of gas and air through the chest, and for mechanically securing unvarying proportions of gas and air during` fluctuations in the volume delivered from said chest, and adjustable stops for -limitingthe stroke ot the,valve in both directions.

13. An apparatus for adjusting the proportions of fuel-gas and air, comprising a chest, a movable valve therein and provided with means 'tor increasing or diminishing the flow el and air simultaneously, and for mechanically securing unvarying'proportions ot' and air during fluctuations in the volume delivered trom said chest, adjusta ble stops tor limiting both opening and closing nmven'ients ot said valve, and adjustable nieans tor atteeting the capacity ot said valve and thereby varying the proportion ot' gas and lair delivered by the apparatus.

l/t. ln combination, a ehestdivided into air inlet, air outlet, gas inlet and 'gas outlet ing a part projecting therefrom and having opposite openings in said air inlet chamber, and also having opposite openings in said air outlet el'ianibei, a lube rotatably mounted in said gas outlet chamber and communicating 'with said gas inlet chamber and having opposite openings in said gas outlet rhan'iber; a manually operable device connected to said rotatable tube and provided with a ,sf-ale and index, a tubular valve fitting said tubes and movable endwise therein and lmviulu a partition which divides it into air and gas compartinents, said val\e having opposite openings into each ot said rhambers, its openings in the outlet cham-- bers being closable by said tubes and being I movable into register with the tube openings in said outlet chambers, a head provided in said telve, a pin projecting from said head through a slot in said projecting portion of the first-mentioned tube, and nuts threaded upon said projecting portion upon opposite sides of said pin and serving as adjustable stops vtorthe latter.

l5. ln combination, a. chest divided into air inlet, air outlet, gas inlet and gas outlet chambers, a tube fixed in said chest and having a part projecting therefrom and having opposite openings in said air inlet chamber, and also having opposite openings in said air outlet chamber; a tube rotati rely mounted in said gas outlet chamber and communicating with said gas inlet chamber and having opposite openings in said gas outlet chamber; a manually operable device connected to said rotatable tube and provided with a scale and index, a tubular valve titting said tubes and movable endwise therein and having a partition which divides it into air and gas compartments, said valve having opposite openings into each of 'said chambers, its openings in the outlet chambers being elosable by said tubes and being movable into register with the tube openings in said' outlet chambers, a head provided in Said valve, a pin projecting trom said head through a slot in said projecting portion ot the first-mentioned tube, and nuts threaded upon said projecting portion upon opposite sides oi said pin and serving as adjustable stops for the lat er; means being provided tor operating said valve, and the latter having at one end a plug, and also having an open tube passing through said plug and through the dividing partition Within said valve, so as to balance the longitudinal tiuid pressure upon the valve.

itt. ln combina/tum, a chest divided into air inlet, air outlet, gas inlet and gas out-let chambers, a tube tived in said chest and having a part projecting therefrom and having opposite openings in said airinlet chamber, and also having opposite' openings in said air outlet chamber; a tube rotatively mounted in said `outlet chamber and communieating with said gas inlet chamber andhaving opposite openings in said gas outlet chamber; a manually operable device connected to said rotatable tube and provided with a. scale and index, a tubular valve titting said tubes and movable endwise therein and having a partition which divides it into air and coinpartments, said valve having Aoppositeopenings vinto each of said chamb rs, its openings in the outlet chambers being olosable by said tubes and being movable into register With the tube openings in said outlet chambers, a head provided in said valve, a pin projecting from said head through a slot in said projecting portion ot the first-mentioned tube, and nuts threaded,

upon said projecting portion upon opposite sides ofsaid pin and serving as adjustable stops for the latter; said projecting end of the first-mentioned tube being threaded into a case or frame in which is contained a movable Part connected to said valve for actuating the latter.

17. The combination of a chest element having a gas outlet port and an air outlet port, a valve device to regulate the flow of gas and airj, said valve device fitting in the valve chest and movable therein to open and close the ports, a partition' dividing said valve into uncommunicative Y gas and air chambers, and `manually adjustable means connected to one of said chest' and valve elements to regulate the sizeof the opening made by moving. said valve, and thereby( vary the proportion 'of the mixture of gas and air.

18. Thev combination of a chest having a gas outlet port and an air outlet port, a valve device lto regulate the flow of' gas and air, said valve device fitting in the valve chest and movable therein to open and close the ports, a partition dividing said valve into uncommunicative 4gas-and air chambers, and a member adjustable relatively to both said chest and said valve device, to vary the effective opening caused by the movement of the valve for the passage of fluid, and thereby regulate the proportion of the mixture of gas and air.

19. The combination of a chest having a gas outlet port and an air outlet port, a

valve device to regulate the flow of gas and air, said valve device fitting in the valve chest and movable therein to open and close the ports, and a member adjustabley relatively to both said chest and said valve ,device, to vary the proportion of the mixture of gas and air;,said ymanuallyadjustable valve device in the form of a slotted cylinder'.

20. In combination, a-chestV and a Valve device therein divided into uncommunicative gas and air chambers, and provided With means for increasing or diminishing the flow of gas and air simultaneously and for mechanically securing unvar ing proportions of gas and air during f uctuations in the volume vof the mixture delivered from sai-d chest, and manually adjustable means "for affecting the capacity of said valve device and thereby varying the proportions of gas and air in the delivered mixture.

21. In combination, a chest anda valve device therein provided With means for increasing or diminishing the flow of'. gas and air simultaneously and for mechanically securing unvarying proportions of gas and air during the fluctuations in the volume of' the mixture delivered from said chest, said chest having ports, and amanually adjustable closure for one of said ports,said closure adjustable in a direction transverse to the movement of said valve device, for varyi'ng the proportions of air 'and gas in the delivered mixture.

22. A' fluid mixture` regulator comprising a chest 'having a plurality of inlets, one for -each of the fluids to be mixed, valve means movable to control concomitantly the quantityof each fluid passing through said chest, so that the quantities will be according to a predetermined ratio, said valve means having passages therein for saidfluids, and di'- vided by a partition into uncommunicative gas .and airV chambers and proportionating meansfor varying said ratio by varying the effective Capacity of certain of said passages relative to certain others of said passages, whereby the quantity permitted to pass by a given movement of said valve means for certain of said fluids will be `changed, and for certain others Will remain constant.

23. A fluid mixture regulator comprising a chest having inlets and outlets, means for permitting `passage of a plurality of uids to be mixed, a tubular valve having passages for permitting flow of the fluids therethrough, said valve being movable to regulate the volumes of fluids passing therethrough, and a member .movable relatively to said valve, to vary the size of one of the passages therein, to determine the effective Vcapacity of such passage in said valve for a given movement of said valve.

Q4. An apparatus for adjusting the proportions of a plurality of fluids to be mixed having means for admitting and delivering the several fluids, means, including a valve, for controlling the volume delivered by the apparatus, said volume-controlling means including a device for securing mechanically unvarying proportions ofthe several fluids during fluctuations in the volume delivered,I and adjustable means for regulating the proportions of the several fluids in the mixture; said valve divided into uncom.

` 110 25. A 4fluid mixture regulator comprising municative gas and air compartments.

a chest having inlet and outlet openings therein, a tubular valve, having passages therein separated from each other, one passage for each of the fluids to be combined in the mixture, said tubular valve being movable axially to vary concomitantly the quantity of all of the fluids passing through said passages in said valve.

GEORGE MACHLET, R.

' Witnesses: l

FRITZ W. MACHLET, SAMUEL R. OGDEN. 

